**1. Mathematics Textbook 1B**

(b) Attempt Exercise 9.2 Q1 to Q10.

*Enter your answers to Exercise 9.2 under Comments. Label your Answers with Question numbers.*

**2. ACELearning Portal: eLearning Portal**

> Additional Arithmetic

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**Ratio, Rate and Speed: Choose Rate**

(a) Go through video lessons: Rate, Average Rate, Example 1, Example 2

(b) Try Practice Drills on your own to check your understanding

Note: An email has been sent to all students via the AceLearning

1. a) $3.50/l

ReplyDeleteb) 72vases/day

c) 47words/min

d) $80/m^2

e) 4kg/m

f) 60g/egg

2. a) $23/hour

b) $920/week

3. a) 9km/l

b) $1.20/l

4. a) 87.5g/cube

b) 0.7g/cm^3 of cube

5. a) $15/ticket

b) $150

6. a) $22.50/m^2

b) $450

7. a) 27l/min

b) 3mins

8. a) $26/kg

b) 25g/m^2

c) $78

9. a) $201 600

b) $4200/m^2

10. a) 19.3g/cm^3

b) No it is not, it is slightly lighter than if made of pure gold.

1) a) $3.50/l

ReplyDeleteb) 72 vases/day

c) 47 words/min

d) $80/m^2

e) 4kg/m

f) 60g/egg

2)a) $23/hour

b) $920/week

3) a) 9km/l

b) $1.20/l

4) a) 87.5g/cube

b) 0.7g/cm^3

5) a) $15/ticket

b) $150

6) a) $22.50/m^2

b) $450

7) a) 27 l/min

b) 3minutes

8) a) $26/kg

b) 25g

c) mass:3kg

cost: $78

9) a) $201 600

b) $4200/m^2

10) a) 19.3g/cm^3

b) No.The gold cube would be lighter in weight if it is made of pure

gold.

1)a)$3.50/l

ReplyDeleteb)72 vases/day

c)47 words/min

d)$80/m^2

c)4kg/m

d)60g/egg

2)a)$23/hour

b)$920/week

3)a)9km/l

b)$1.20/l

4)a)87.5g/cube

b)0.7g/cm^3

5)a)$15/ticket

b)$150

6)a)$22.50/m^2

b)$450

7)a)27 l/min

b)3 minutes

8)a)$26/kg

b)25g

c)mass:$3 cost:$78

9)a)$201 600

b)$4200/m^2

10)a)19.3g/cm^3

b)No. If it were made of pure gold ,like the first cube, It would have had less mass.

1a. $3.50/l

ReplyDelete1b. 72 vases/day

1c. 47 words/min

1d. $80/m^2

1e. 4kg/m

1f. 60g/egg

2a. $23/hour

2b. $920/week

3a. 9km/l

3b. $1.20/l

4a. 87.5g/cube

4b. 0.7g/cm^3

5a. $15/ticket

5b. $150

6a. $22.50/m^2

6b. $450

7a. 27 l/min

7b. 3 minutes

8a. $26/kg

8b. 25g/m^2

8c. $78

9a. $201 600

9b. $4 200/m^2

10a. 19.3g/cm^3

10b. No. This cube should be lighter if it is made of pure gold.

1a) $7/2

ReplyDelete= $3.50/l

1b) 360/5

= 72 vases/day

1c) 376/8

= 47 words/min

1d) $240/3

= $80/m^2

1e) 10kg/2.5

= 4kg/m

1f) 720g/12

= 60g/egg

2a) $184/8

= $23/h

2b) $184 X 5

= $920/week

3a) 225/25

= 9km/l

3b) 30/25

= $1.20/l

4a) 525/6

= 87.5/cube

4b) 5x5x5=125 cm^3

87.5/125

= 0.7g/cm^3

5a) $120/8

= $15/ticket

5b) $15 X 10

= $150/10 tickets

6a) $270/12

= $22.50/m^2

6b) $22.50 X 20

= $450

7a) 9 X 3

= 27 l/min

7b) 60 X 45 X 30 = 81,000 cm^3 = 81 l

81/27

= 3 minutes to fill the tank completely with water

8a) 13 X 2

= $26/kg

8b) 500/20

= 25g/m^2

8c) 15 X 8 = 120m^2

500 X 6 = 3000g

= 3kg

$13 X 6

= $78

9a) 504,000/5 X 2

= $201,600

9b) 504,000/120

= $4200/m^2

10a) 3 X 3 X 3 = 27cm^3

52.11/27

= 19.3g/cm^3

10b) No. That cube is not made up of pure gold as would be heavier if it was made up of pure gold.

1)a. $3.50/l

ReplyDeleteb. 72 vases/day

c. 47 words/min

d. $80/m^2

e. 4kg/m

f. 60g/egg

2) a.$23/hour

b. $920/week

3) a.9km/l

b.$1.20/l

2)a. $23/hour

b. $920/week

3)a. 9km/l

b. $1.20/l

4)a. 87.5g/cube

b. 0.7g/cm^3

5)a. $15/ticket

b. $150

6)a. $22.50/m^2

b. $450

7)a. 27 l/min

b. 3 minutes

8)a. $26/kg

b. 25g/m^2

c. $78

9)a. $201 600

b. $4 200/m^2

10)a.19.3g/cm^3

b. No. The cube should have been a little lighter if its made out of pure gold

1(a)3.50 (b)72 (c)47 (d)80 (e)4 (f)60

ReplyDelete2(a)$23/h (b)$920/week

3(a)9km/litre (b)$1.20

4(a)87.5g (b)0.7g

5(a)$15 (b)$150

6(a)$22.5 (b)$450

7(a)27 litre (b)3min

8(a)$26 (b)25g (c)mass:3kg cost:$78

9(a)$201600 (b)$4200

10(a)19.3g

(b)A pure gold of cube of side 2cm would be 154.4g

This comment has been removed by the author.

ReplyDelete1 (a) $3.50/l

ReplyDelete(b) 72 vases/day

(c) 47 words/min

(d) $80/m^2

(e) 4 kg/m

(f) 60g/egg

2 (a) $23/h

(b) $920/week

3 (a) 9km/litre

(b) $1.20/litre

4 (a) 87.5g/cube

(b) 0.7g/cm^3 of cube

5 (a) $15/ticket

(b) $150

6 (a) $22.5/m^2

(b) $450

7 (a) 27 l/min

(b) 3 min

8 (a) $26/kg

(b) 25g

(c) 3000g; $78

9 (a) $201600

(b) $4200/m^2

10 (a) $19.50/cm^3

(b) Pure gold of 2cm side: 2^3 x $19.30 = 154.40g

Gold cube of 2 cm side: 120g

The gold cube is not pure as referred to the above working shown.

[Oops for the deleted post above, because I missed out an important word in the statement hahaha]

1a: $3.50/L

ReplyDelete1b: $72

1c: 47words/min

1d: $80/m^2

1e: 4kg/m

1f: 60g/egg

2a: $23/h

2b: $920/week

3a: 9km/L

3b: $1.20/L

4a 87.5g/cube

4b 0.7g/cm^3 of cube

5a $15/ticket

5b $150

6a $22.5/m^2

6b $450

7a 27 L/min

7b 3 min

8a $26/kg

8b 25g

8c Mass: 3kg, Cost: $78

9a $201600

9b $4200/m^2

10a $19.50/cm^3

10b Pure gold would be 154.4g, so it is not 100% gold.

1a: $3.50/L

ReplyDelete1b: $72

1c: 47words/min

1d: $80/m^2

1e: 4kg/m

1f: 60g/egg

2a: $23/h

2b: $920/week

3a: 9km/L

3b: $1.20/L

4a 87.5g/cube

4b 0.7g/cm^3 of cube

5a $15/ticket

5b $150

6a $22.5/m^2

6b $450

7a 27 L/min

7b 3 min

8a $26/kg

8b 25g

8c Mass: 3000g,

Cost: $78

9a $201600

9b $4200/m^2

10a $19.50/cm^3

10b No. it is because pure gold cube of side 2 cm weighs 154.4g wheras a gold cube of side 2 cm weighs 120g thus it is not made of pure gold.

1a. $3.50/l

ReplyDelete1b. 72 vases/day

1c. 47 words/min

1d. $80/m^2

1e. 4kg/m

1f. 60g/egg

2a. $23/hour

2b. $920/week

3a. 9km/l

3b. $1.20/l

4a. 87.5g/cube

4b. 0.7g/cm^3

5a. $15/ticket

5b. $150

6a. $22.50/m^2

6b. $450

7a. 27 l/min

7b. 3 minutes

8a. $26/kg

8b. 25g/m^2

8c. $78

9a. $201 600

9b. $4 200/m^2

10a. 19.3g/cm^3

10b. The cube will be lighter if it was pure gold.

1 (a) $3.50/litre

ReplyDelete(b) 72 vases/day

(c)47 words/min

(d) $80/m^2

(e)4kg/m

(f)60g/egg

2 (a)$23/hour

(b) $920/week

3 (a) 9km/l

(b)$1.20/l

4 (a) 87.5g/cube

(b) 0.7g/cm^3

5 (a)$15/ticket

(b)$150

6 (a) $22.50/m^2

(b) $450

7 (a) 27 l/min

(b) 3 minutes

8 (a)$26/kg

(b) 25g/m^2

(c) $78

9 (a)$201 600

(b)$4 200/m^2

10 (a) 19.3g/cm^3

(b)No, it is lighter than pure gold, which means it's probably not real.

1a. $3.50/l

ReplyDelete1b. 72 vases/day

1c. 47 words/min

1d. $80/m^2

1e. 4kg/m

1f. 60g/egg

2a. $23/hour

2b. $920/week

3a. 9km/l

3b. $1.20/l

4a. 87.5g/cube

4b. 0.7g/cm^3

5a. $15/ticket

5b. $150

6a. $22.50/m^2

6b. $450

7a. 27 l/min

7b. 3 minutes

8a. $26/kg

8b. 25g/m^2

8c. $78

9a. $201 600

9b. $4 200/m^2

10a. 19.3g/cm^3

10b. The cube will be lighter if it was pure gold.

1. a) $3.50/litre

ReplyDeleteb) 72vases/day

c) 47words/min

d) $80/m^2

e) 4kg/m

f) 60g/egg

2. a) $23/hour

b) $920/week

3. a) 9km/litre

b) $1.20/litre

4. a) 87.5g/cube

b) 0.7g/cm^3

5. a) $15/ticket

b) $150

6. a) $22.50/m^2

b) $450

7. a) 27l/min

b) 3mins

8. a) $26/kg

b) 25g/m^2

c) $78

9. a) $201 600

b) $4200/m^2

10. a) 19.3g/cm^3

b)No, it is not. It is slightly less dense than pure gold